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(No Model.) 2 Sheets-Sheet 1.

L. LAMBORN.

ROAD SGRAPER.

Patented Dec. 18, 1883.

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2 Sheets-Sheet 2.

(No Model.)

L. LAMBORN.

ROAD SORAPER. No. 290,246. Patented Dec. 18, 1883.

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UNITED STATES PATENT OFFICE.

LlHVIb. LAMBOIIX, Uh IIABIORIUN, PENNSYLVANIA.

ROAD-SCRAPER.

SPECIFICATION forming part of Letters Patent No. 290,246: dated December 18, 158i.

Application filed June 29, 1853.

To all whom, it 71w IOILCGIIL. I

Be it known that I, Lnwis LAMBORN, oi. Hamorton, in the county of Chester and State of Pennsylvania, herein set forth my claims for Improvements in Road-Scrapers, reference being had to the accompanying drawings.

Figure 1 is a side elevation of the machine when placed on an ordinary road-wagon. Fig. 2 is a plan of the same. Fig. 3 shows one of the compound levers and one of the beams by which the pressure exerted is directed to a point behind the scraper. Fig. 5 shows another method of accomplishing the same end. Fig. 4 shows the method of draft used.

This invention is an improvement in mas chines for leveling and scraping roads.

In the drawings like letters of reference re for to like parts of the nmchine in the different figures.

A is the frame placed on the running-gear of a wagon.

B B are two vertical posts attached to the frame A, and united at their lower ends by the draft-bar G. This draft-bar is connected by a clevis, U, and an eycbolt, G, Fig. 3, to beams l), which pass directly over the scraper S, and are fastened to it.

E, Figs. 1 and 3, is a compound lever, made up of two longitudinal levers-one above and one below the frame-connected by a link pivoted at F" F, having its handle at ll, fulernms at F and F, and being attached to the beam D some distance behind the scraper at the point II. The lever I, Fig. 4, is similar to lever B, being attached to the other beam, D. A bar, K, extends from the beam 1) at the point II to a point, L, near the bottom of the scraper.

Fig. 5 shows another method of applying pressure behind the scraper.

a is a hand-lever, with its fulcrum at b.

c is a rod extending from the lever to the beam D at a point behind the scraper. A similar contrivance may be used on the other side.

m m are rods connecting the pivotbolt T with the draft-bar (1. This bolt T is used to fasten the frame A to the running-gear of the wagon.

B is a rudder attached to the scraper, by which the machine maybe kept in its place.

(No model.)

1 is the guide-pole and gearing ot' the wagon on which the frame may be placed.

Q is a semicircular plate of metal attached to the bar \V. This bar \V is fastened to the frame by clips 1%. Thcplatc Q rests upon the bolster, some part of said plate being directly above the body-bolt of said wagon when the wagon is turned round.

Z is a link connecting the body-bolt of the wagon with the bolt T. ()ne of these links is above, one below the axle.

A is a rod, which may be fastened, when needed, to the beam 1), and above to the frame A This is used to hold the beams and scraper in any particular position. It can be removed if not needed. There is a similar rod on the other side of'the machine, joining the other beam with the frame A.

By removing the body of an ordinary wagon, placing this frame A in the place of said body,

fastening the gearing to the frame in front by the bolt T, and clamping the frame A to the guide-pole and stays in the rear, the machine is ready for use.

There are two points in which I believe my machine to be superior to all others.

First. The exertion of the power for holding the scraper down to work by means of the compound levers E and I, or the lever a and the rod 0 at the point H, or any convenient point behind the scraper. I am aware that a rod similar to c has been used, being fastened to the top of the scraper; but this red, being fastened to the beam 1) at a point behind the scraper, enables the operator to exercise more direct control over and to exert greater power upon the scraper than if the rod were attached to the top of the scraper. This exertion and application of the force and power behind the scraper by any convenient means secures better results than could possibly be attained by attaching the lever to the top of the scraper, (see Figs. 3, 4, and 5,) and obviates the inconvenient necessity of having heavy wheels and running-gear to hold and keep the said scraperbar in proper position.

Second. The use ofthe clevis U, fitting loosely in the cycbolt G, allowing the ends of the beams D to move vertically, and giving a corresponding motion to the scraper-bar. In-

stead, therefore, of an unyielding pressure I sernper S, the elevis U, and the eyebolt G against an obstruction, thereby jarring the whole machine, giving the horses on nglyjerlc, and seriously annoyingthe operator, the end of the beam to which the elevis is attached falls till the bar it reaehesthe top of the elevis U; then the bottom of the scraper falls baek correspondingly, yielding to the obstruction, allowing the scraper to pass over it with no IO jar to any part of the machine beyond said beams and scraper. The scraper not yielding in such cases and the consequent jar have been heretofore the ehiet' objection to road scrapers. Myconstrnetion, asabove set l'olth, obviates this diflienlt v.

Having fully described my invention, what I claim as new, and desire to seem'e by Let ters Patent, is as. follows:

1, The combination of the beams I), the

with the draft-bar C and the posts B, attached to a supporting-frame, substantially as and for the purposes set forth.

' 2. The combination of a snpporting-fi'ame, the beams D, the elevis U, the eyebolt G, the draft-bar (I, and the scraper S with devices for exerting force or pressure on the beams 1) at some point behind the scraper, substantially as and for the purposes set forth.

to the frame by the pivot-bolt T, and the draftbar 0, with the beams l), the bars K, and the scraper S, substantial l v as and for the purposes set forth.

TJHYIS LAMBORN.

Wit uesses:

hiLLMonE G. (rnlxxnilmz, l. M. PYIlI-L I). The combination of the rods m, attached 

